CBQE-0: fix typo in log

Change-Id: I044c7e79f907ace3c790a84f241627cf2defb09d
Reviewed-on: http://review.couchbase.org/33066
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>